>>reporter: steven went through controversial treatment called repairtive therapy last year in an effort to become straight but the bay area man says no one should go through it because it can be dangerous. >> it causes depression. anxiety. thoughts of suicide and makes you anxious and cause to you hate yourself. >>reporter: he was excited to hear governor brown sign into law a ban preventing mental health professionals from using these in california on minor. members the psychiatric association concluded are harmful to patient n.a statement the governor said the practices have no basis in sigh he says or medicine and now taken to the quackery. >> we have the signs we don't have before. the sexl orientation is not something be cnged. >> viory ort lid fogay rights aocate ik barely dry on governor setting and conservative group already filed a lawsuit to stop the ban from taking effect january 1st. they claim it's unconstitutional. violating the first amendment. >> absolutely clamps down on speech by the professionals involved. it also affects the minorities and parents right to access par